merge release-QAR-511 Viewer 1.20 RC 5

doc/contributions.txt

indra/llcommon/llversionviewer.h

indra/llrender/llrendertarget.cpp

indra/llrender/llrendertarget.h

indra/llrender/llvertexbuffer.cpp

indra/llui/llfloater.cpp

indra/llui/lltabcontainer.cpp

indra/newview/app_settings/settings.xml

indra/newview/gpu_table.txt

indra/newview/lldrawpoolalpha.cpp

indra/newview/llface.cpp

indra/newview/llfloateranimpreview.cpp

indra/newview/llfloateranimpreview.h

indra/newview/llfloatertools.cpp

indra/newview/llselectmgr.cpp

indra/newview/llspatialpartition.cpp

indra/newview/llviewerdisplay.cpp

indra/newview/llviewerobject.cpp

indra/newview/llviewerwindow.cpp

indra/newview/llvoicevisualizer.cpp